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  • OPA1632: Output does not exist in differential input and differential output configuration

    Part Number: OPA1632
    Other Parts Discussed in Thread: OPA1633, OPA1622

    Tool/software:

    The circuit of OPA1632 is as shown in the attached schematic.

    Right now, we have mounted only the first stage, U29 and its circuit. The capacitors C94 to C97 are removed…

  • OPA1622: Shut down output

    Part Number: OPA1622

    Tool/software:

    Hi,

    I'm hoping to continue the conversation from this previous thread here: https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1421389/opa1622-en-shutdown-not-working 

    Does your team have recommendations 

  • OPA1622: EN (Shutdown not working)

    Part Number: OPA1622
    Other Parts Discussed in Thread: OPA1632

    Tool/software:

    Hello,

    I am using the OPA1622 in a design as unity gain buffer, as shown below.

    The Enable pin is normally pulled up to 34V1 (34V) using a 22k resistor. Then I have an external…

  • OPA1602: Newer Alt

    Part Number: OPA1602
    Other Parts Discussed in Thread: OPA1612, INA1620, OPA1622, OPA1662

    Tool/software:

    Hi,

    I have a customer who is wondering if there is a newer version of this device planning to be released? 

  • OPA1622: Missing Package Data

    Part Number: OPA1622

    Tool/software:

    I am unable to find a dimensioned package drawing fore this device. The package name is VSON (DRC). I have checked on your website and the datasheet obviously. 
    Can you please help. 

  • OPA1622: studio headphone amplifier design review

    Part Number: OPA1622

    Tool/software:

    Hi,

    I am making a studio headphone amplifier product based on the AK4499EX DAC (as discussed in a linked post). I would like more output power than a single OPA1622 can provide (300mA current would be ideal, even at…

  • LME49600: OPA1622 headphone amplifier design review / TINA-TI instability at low rail voltages

    Part Number: LME49600
    Other Parts Discussed in Thread: OPA1622, , TINA-TI, BUF634, BUF634A, OPA1633

    Tool/software:

    Hi,

    I am designing a headphone amplifier for use in recording studio applications. It will need to drive high-impedance headphones to loud…

  • OPA1622: Theta-JC

    Part Number: OPA1622

    Tool/software:

    Hi Experts,

    Good day! 

    I'm looking for the thermal resistance information for the p/n below. No information in the datasheet can you share with us the thermal resistance and theta-JC of the device?

    • OPA1622IDRC…
  • OPA1662: OPA1662

    Part Number: OPA1662
    Other Parts Discussed in Thread: OPA1622

    Tool/software:

    Hello,

    I am working with the OPA1662 and would like to clarify something in the datasheet. When one looks at the short circuit current of +/- 50 mA @ +/-15V, the note "One channel…

  • TLV4113: TLV4113 THD+N ?

    Part Number: TLV4113
    Other Parts Discussed in Thread: OPA1622, INA1620

    Dear Sir,

    I am looking into the THD+N in Figure 16 on page 10 of the data sheet. 

    My headphone is specified at 16 ohm impedance, I attend to use TLV4113 as a headphone drive, however…

  • OPA1622: TINA Simulation Phase Margin VS Capacitive Load

    Part Number: OPA1622

    Hi team,

    I downloaded the OPA1622 model on TI's website and used TINA TI to simulate the phase margin at different capacitive loads and found the simulation results to be inconsistent with the datasheet curve.

    According to the…

  • OPA1622: EN input current

    Part Number: OPA1622

    Hello,

    the typical EN pin input current for +25°C is given in the datasheet with 1.5 uA. Please specify the maximum input current considering the temperature range -40..125 °C.

    Is the input current caused by a pull-up or a…

  • OPA1622: LPF Circuit Review

    Part Number: OPA1622
    Other Parts Discussed in Thread: TINA-TI, OPA145

    Hello,

    I would like to use OPA1622 directly on output of high-end DAC using the following DAC-vendor-recommended circuit:

    Are there any concerns with the component values in this…

  • How to achieve differential input to single-ended output application

    Other Parts Discussed in Thread: OPA1622

    Hi Sir

      Would you mind introduce a OP amplifier or DAC for me?

    I have a design application for the MIC (MEMS) differential input to single-ended output, and I would like have a tiny package for it, 

    actually, I have…

  • OPA1622: I connected pin 3 (GND) to V-(-12V) instead of GND.

    Part Number: OPA1622

    I connected the 8th pin (EN) of the OPA1622 to V+ (+12V), the 3rd pin (GND) to V- (-12V) instead of GND, and connected the other pins as specified and continued to use them.

    If so, what kind of failures and effects are possible?

  • OPA1622: I connected pin 3 (GND) to V-(-12V) instead of GND.

    Part Number: OPA1622

    I connected pin 8 (EN) of OPA1622 to V+ (+12V), pin 3 (GND) to V- (-12V) instead of GND, and connected the other pins as specified and continued to use them.

    If so, what are the possible inconveniences?

  • INA851: INA851 Driving Op Amp Application Note

    Part Number: INA851
    Other Parts Discussed in Thread: OPA1662, , OPA1622, PGA855, INA828, INA849

    Hi, I was wondering if there are any application notes for using the INA851 differential output to drive an Op Amp input. I was planning to use an OPA1662 to…

  • High speed amp for 20Vpp signal

    Other Parts Discussed in Thread: THS3491, THS4031, THS3091, OPA828, OPA211, LM4562, OPA1622, OPA210, OPA1602, THS6012, TPA6120A2, THS3121, THS3120

    What high speed amps can meet the following criteria on a ±15V supply? 

    ein @ 1kHz ≤3nV/rtHz 

    -3dB…

  • OPA1622: Weird Line Driver

    Part Number: OPA1622
    Other Parts Discussed in Thread: LM4562, OPA211, OPA210, THS4031, OPA1612, , OPA828, OPA2210, OPA1637, LME49860, THP210, TINA-TI, OPA1602

    Would this work IRL? Anything to look out for? Suggestions for improvement?

    • The ideal amp…

  • OPA1622: Parallel Operation

    Part Number: OPA1622
    Other Parts Discussed in Thread: INA1620, TINA-TI

    Has anyone ever tried the OPA1622 in parallel operation (to increase output current)? Is there by chance an app note for this configuration?

    Would you say the 1622 is better suited…

  • OPA1622: opa1622

    Part Number: OPA1622
    Other Parts Discussed in Thread: OPA1641, INA1620, , TPS61322, LMV1015, LMV721, OPA172

    Hello, not sure if this the appropriate part to use for my application, so here is what I am trying to do. 

    Need an audio chip that can take high…

  • OPA1622EVM: EVM Releases Magic Smoke

    Part Number: OPA1622EVM
    Other Parts Discussed in Thread: OPA1622, , OPA1637EVM

    Testing an opa1622evm and powered it with 2x 13v batteries. I then connected the balanced output of a topping e70 dac to it and with no load the evm measured 4.8 vrms in and…

  • OPA1622: enable feature not behaving as expected

    Part Number: OPA1622

    Hello All!

    I'm experiencing a very odd behavior when trying to use the enable pin feature of the OPA1622 in the clipper circuit below:

    As can be seen above, I'm setting the GND pin to -9V in order to reference the enable signal…

  • OPA1622: Enable pin behavior on input output - Output not off, but clipped

    Part Number: OPA1622

    Hello All,

    I've received a simple unity gain board that I designed and noticed a very odd behavior: when shorting the OPA1622 enable pin to ground, the output is clipped between -1.4V and +1.6V.
    It was my understanding that when…

  • OPA1622: OPA1622

    Part Number: OPA1622
    Other Parts Discussed in Thread: INA1620

    Hello,

    I have to design an audio driver to drive a handset or headset:

    Handset - 20 ohms and sensitivity 107 dB@1 mW

    Headset - 625 ohms and sensitivity 112 dB@ 1mW

    What op amp do you recommend…

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